Stop-motion for looms.



PATENTED MAY 26, 1908.

B. PORSTER.

STOP MOTION FOR LOOMS.

APPLICATION FILED MAE.14, 1907.

Wdmcoaco 35 With but little loss of time.

UNITED STATES PATENT OFFICE. BENJAMIN FORSTER, OF MIDDLETOWN, CONNECTICUT, ASSIGNOR TO JAMES K. LANN ING, OF BOSTON, MASSACHUSETTS.

STOP-MOTION FOR LOOMS.

Specification Letters Patent.

Patented May 26, 1908.

Application filed. March 14, 1907. Serial No. 362,303.

in the art to which it appertains to make and use th'b same.

This invention relates to stop mechanism for looms, and has for its ob'eet to provide a device ofthis kind which will automatically close an electrical circuit and thereby actuate the stop controlling mechanism of the loom' Whenever anyof the threads of the warp are broken.

The device is extremely simple and can be made veryijcheaply, and is so constructed of itcan be seen without requiring any (p0 tion of it to be taken apart or separate It can be placed in any position that is suitable for two or more harness and that all partgs can be set close to the harness, and the weight of the drops or warp detectors is not ent rely borne by the warp threads, and if any of the threads are to be tied in the drops they do not have to be taken from the drop that holds them while being tied. They act very quicklyand whenever one of them has been actuated it will move into a osition in which it can be quickly and readi ylocated, thereby permitting of the thread being tied In the accompanying drawings which illustrate the invention, Flgure 1 is a side elevation of a loom -frame provided withmyimproved stop mechanism; Fig. 2 is an enlarged 3 view of one'of the drops and the parts of the loom adjacent thereto ,Fig. 3 is a top plan view of 'a portion of the loom showing the shipping mechanism in the position it occupies when the loom is running; and Fig. 4 is a similar view showing the position of thelever after the loom has been stopped.

Referring more particularly to the drawings, 1 indicates the loom frame which ma be of any desired construction provided with the usual shipping lever, 2.

Suitably secured at each side of the loom is g, a fiber reed holder, 3, only one of which is I ,shown as they are both alike, and are adapted to be secure cent to the harness, 4. Extending from one in any convenient place adjaholder, 3, to the other are front and b ack lease-rods, 5 and 6, or er which-the warp threads, 7, are passed in the usual manner.

Above the rods 5 and 6, are two wires, 8 and '9, on the lower one of which are .pivotally mounted the drops or warp detectors, 10, the

lower portion. of each of which is slotted longitudinally as at 11 forengagingwith the cross portions oi the threads, 7 ,between the lease rods if desired,= and the upper portions are ada ted to engage with the upper wire, 9. These rops are referably formed from fiat steel, eight one t' ous'andths, art of an inch fin-thickness by seVen-sixteent s of an inch in -width,-and substantially four \md one-half inches long, and when su ported by the threads, they occupy an ang e of about fortyfive degrees, although it is evident that the size of the dro s may be varied to suit conditions, as also the angle at which they are held out of the vertical.

A source of electrical energy, as a battery, 12, is connected with the loom frame and thereby with the shipping handle, 2, by

means of a wire, 13, and also with one of the rods, as 9, by means of a wire, 14. A wire, 15, from the other wire, as 8, leads to an electro-ma net, 16, which is located in a osition a jacent to the shipper handle, 2. he other end of the magnet is connected with a'spring, 17, bymeans of a wire, 18,

whereb whenever anyone of, the drops, 10, is pernntted to fall into a vertical position by the,breaking of either one of the wires with .which its slotted end engages, the *upperend of the wire will engage with thenpper wire, 8,

and thereby complete a circuit and cause the magnet, 16, to be energized. As soon as the magnet has thus been energized, its armature, 19, is swung upon its pivot, 20, so as to cause its free end to be moved into a position to be e aged by the. lay, 21, the lay being, pr'efer bly provided with a wearing plate, 22, "to prevent injury when it engages with the end of the armature, 19. The armature is-preferably in the form of an elbow and is adjusted as by means of a set ,screw, 2, in the lever, 2, and which is up the filling, it will engage with the armieture and force the shipping handle, 2, out of its notch, 23, thereby allou-ing it to be thrown lated from. the rest of the loom frame.

to the opposite'end of the slot, 24, and the; loom to be stopped. As thes ring, 17, forms a part of the circuit, it is evi ent that it will be impossible to start the logms'o'long as any thread is broken, and the '1rcuit is complete at that'point, for as soon'as the handle 2 engages n with thespr'ing, 17, .the'circuit is complete at-that point arfd the magnet is energized, which will cause. its armature to be raised and thereby prevent the handle enteIjn-g" the notch, 23, the spring being insips sooiras'the lever has been disengaged from the notch, and is thrown to the'opposite end of its slot in the usual mannenthe circuit is broken and there is no loss of battery power even thou h the thread should not be tied immediate y. Y

Although I have shown What I consider the most desirable means for embodying my invention, it is evident that cha es and alterations can be made therein and reserve the right to make all such variations as will spring bearin come within the scope of my invention.

A Having described my invention, I elaim:. In a sto mechanism fior looms, aloom provided'with a lay, drop Livires, an-electro magnet; a shipper lever and an insulated against the lever in its set said positlon, an e ectrioal circuit including1 aped wires, magnet, lever and spring, an L s armature pivotally seTcTlred to the lever at its 'n testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

BENJAMIN roasTEn.

. Witnesses:

' 'JonN J. WALSH,

M. L. ANDERSON. 

